SpringBoot+SpringCache实现两级缓存(Redis+Caffeine)

package com.xfgg.demo.config;

import lombok.AllArgsConstructor;
import com.github.benmanes.caffeine.cache.Caffeine;

import org.springframework.cache.CacheManager;

import org.springframework.cache.caffeine.CaffeineCacheManager;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.concurrent.TimeUnit;

@Configuration
@AllArgsConstructor
//把定义的缓存加入到Caffeine中
public class CacheConfig {
    @Bean
    public CacheManager cacheManager(){
        CaffeineCacheManager cacheManager = new CaffeineCacheManager();
        cacheManager.setCaffeine(Caffeine.newBuilder()
                //使用refreshAfterWrite必须要设置cacheLoader
                //在5分钟内没有创建/覆盖时，会移除该key，下次取的时候从loading中取【重点：失效、移除Key、失效后需要获取新值】
                .expireAfterWrite(5, TimeUnit.MINUTES)
                //初始容量
                .initialCapacity(10)
                //用来控制cache的最大缓存数量
                .maximumSize(150)
        );
        return cacheManager;
    }
}

package com.xfgg.demo.config;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.RedisPassword;
import org.springframework.data.redis.connection.RedisStandaloneConfiguration;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.StringRedisSerializer;

//生成的redis连接
public class RedisConfig<GenericObjectPoolConfig> {
    @Value("${spring.redis1.host}")
    private String host;
    @Value("${spring.redis1.port}")
    private Integer port;
    @Value("${spring.redis1.password}")
    private String password;
    @Value("${spring.redis1.database}")
    private Integer database;

    @Value("${spring.redis1.lettuce.pool.max-active}")
    private Integer maxActive;
    @Value("${spring.redis1.lettuce.pool.max-idle}")
    private Integer maxIdle;
    @Value("${spring.redis1.lettuce.pool.max-wait}")
    private Long maxWait;
    @Value("${spring.redis1.lettuce.pool.min-idle}")
    private Integer minIdle;


    @Bean
    public RedisStandaloneConfiguration redis1RedisConfig() {
        RedisStandaloneConfiguration config = new RedisStandaloneConfiguration();
        config.setHostName(host);
        config.setPassword(RedisPassword.of(password));
        config.setPort(port);
        config.setDatabase(database);
        return config;
    }
    //配置序列化器
    @Bean
    public RedisTemplate<String,Object> redisTemplate(RedisConnectionFactory factory){
        RedisTemplate<String,Object>template=new RedisTemplate<>();
        //关联
        template.setConnectionFactory(factory);
        //设置key的序列化器
        template.setKeySerializer(new StringRedisSerializer());
        //设置value的序列化器
        template.setValueSerializer(new StringRedisSerializer());
        return template;
    }
}